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X-WR-CALDESC:Events for IBM Quantum Innovation Center at NC State
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20191101T120000
DTEND;TZID=America/New_York:20191101T130000
DTSTAMP:20260429T083952
CREATED:20190918T190202Z
LAST-MODIFIED:20191028T191417Z
UID:629-1572609600-1572613200@quantum.ncsu.edu
SUMMARY:Quantum Friday
DESCRIPTION:Informal lunch will be provided with sandwiches\, chips and drinks
URL:https://quantum.ncsu.edu/ibm-quantum/event/test-event-01/
LOCATION:Seminar Room at IBM Q Hub at NC State headquarters (2nd floor of Venture Place on Centennial Campus)\, 930 Main Campus Drive\, Raleigh\, NC\, 27606\, United States
CATEGORIES:Membership,Training and Ed
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20191122T120000
DTEND;TZID=America/New_York:20191122T130000
DTSTAMP:20260429T083952
CREATED:20190918T190341Z
LAST-MODIFIED:20191028T191554Z
UID:631-1574424000-1574427600@quantum.ncsu.edu
SUMMARY:Quantum Friday
DESCRIPTION:Informal lunch will be provided with sandwiches\, chips and drinks
URL:https://quantum.ncsu.edu/ibm-quantum/event/test-event-2/
LOCATION:Seminar Room at IBM Q Hub at NC State headquarters (2nd floor of Venture Place on Centennial Campus)\, 930 Main Campus Drive\, Raleigh\, NC\, 27606\, United States
CATEGORIES:Membership,Training and Ed
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20191201T120000
DTEND;TZID=America/New_York:20191201T130000
DTSTAMP:20260429T083952
CREATED:20191028T191655Z
LAST-MODIFIED:20191028T191717Z
UID:828-1575201600-1575205200@quantum.ncsu.edu
SUMMARY:Quantum Friday
DESCRIPTION:Informal lunch will be provided with sandwiches\, chips and drinks.
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-friday/
LOCATION:Seminar Room at IBM Q Hub at NC State headquarters (2nd floor of Venture Place on Centennial Campus)\, 930 Main Campus Drive\, Raleigh\, NC\, 27606\, United States
CATEGORIES:Membership,Training and Ed
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210212T120000
DTEND;TZID=America/New_York:20210212T130000
DTSTAMP:20260429T083952
CREATED:20210211T181825Z
LAST-MODIFIED:20210212T155823Z
UID:1056-1613131200-1613134800@quantum.ncsu.edu
SUMMARY:Quantum Lunch Series Event - Speaker Yannick Meurice
DESCRIPTION:Talk Title: From Tensorial Formulations of Abelian Gauge Theories to Quantum Computing \nSpeaker: Yannick Meurice\, Professor with the Department of Physics and Astronomy at the University of Iowa. \nAbstract: We give a brief introduction to the physics goals of Tensor Field Theory (for a recent review see arXiv:2010.06539). We show that standard identities and theorems for lattice models with U(1) symmetry get re-expressed discretely in the tensorial formulation. \nWe construct a gauge-invariant transfer matrix in arbitrary dimensions. We show the equivalence with its gauge-fixed version in a maximal temporal gauge and explain how a discrete Gauss’s law is always enforced. We propose a noise-robust way to implement Gauss’s law in arbitrary dimensions. \nWe discuss applications for quantum computing and quantum simulation experiments \n  \nThis is a Virtual Event. \nIf you are interested in attending this event please email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-lunch-series-event/
CATEGORIES:Triangle Quantum Computing Seminar Series
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210226T120000
DTEND;TZID=America/New_York:20210226T130000
DTSTAMP:20260429T083952
CREATED:20210211T221427Z
LAST-MODIFIED:20210217T172839Z
UID:1073-1614340800-1614344400@quantum.ncsu.edu
SUMMARY:Quantum Lunch Series Event - Speaker Lex Kemper
DESCRIPTION:Talk Title: Many-Body Thermodynamics on Quantum Computers via Partition Function Zeros \nSpeaker:  Dr. Lex Kemper is an Associate Professor in the Department of Physics at NC State. \nAbstract:  Interacting quantum systems illustrate complex phenomena including phase transitions to novel ordered phases. The universal nature of critical phenomena reduces their description to determining only the transition temperature and the critical exponents. However\, numerically calculating these for systems in new universality classes is complicated due to critical slowing down\, requiring increasing resources near the critical point. An alternative approach is to calculate the partition function. \nThe partition function is a fundamental object in statistical physics.  Simply put\, it is the count of the number of states at a particular set of thermodynamic state variables (e.g. temperature\, number of particles\, and volume). Beyond that\, its derivatives reveal measurable thermodynamic quantities: free energies\, heat capacities\, etc.  Calculating the partition function is thus a path towards studying the thermodynamics of interacting quantum systems and their phase transitions. \nOne way to obtain the partition function is to analytically continue the calculation onto the complex plane and determines the partition function via its zeros. We show how to robustly perform this analysis on noisy intermediate scale trapped ion quantum computers in a scalable manner\, using the XXZ model as a prototype.  We illustrate the transition from XY-like behavior to Ising-like behavior as a function of the anisotropy. While quantum computers cannot yet scale to the thermodynamic limit\, our work provides a pathway to do so as hardware improves\, allowing the determination of critical phenomena for systems that cannot be solved otherwise. \n  \nThis is a Virtual Event. \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-lunch-series-event-speaker-lex-kemper/
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210305T080000
DTEND;TZID=America/New_York:20210305T170000
DTSTAMP:20260429T083952
CREATED:20210212T135404Z
LAST-MODIFIED:20210212T135404Z
UID:1079-1614931200-1614963600@quantum.ncsu.edu
SUMMARY:Wellness Day - No Quantum Lunch scheduled
DESCRIPTION:
URL:https://quantum.ncsu.edu/ibm-quantum/event/wellness-day-no-quantum-lunch-scheduled/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210319T120000
DTEND;TZID=America/New_York:20210319T130000
DTSTAMP:20260429T083952
CREATED:20210304T195127Z
LAST-MODIFIED:20210317T201525Z
UID:1109-1616155200-1616158800@quantum.ncsu.edu
SUMMARY:Quantum Lunch Series Event - Speaker Milad Marvian
DESCRIPTION:Talk Title: Quantum Earth Mover’s Distance: A New Approach to Learning Quantum Data \nSpeaker: Professor Milad Marvian\, University of New Mexico \nMilad Marvian is an Assistant Professor in the Department of Electrical & Computer Engineering at the University of New Mexico and also a member of the Center for Quantum Information and Control (CQuIC). He completed his Ph.D. in 2018 at the University of Southern California and before joining UNM was a postdoctoral associate at MIT. His research interest includes quantum algorithms and quantum machine learning\, quantum error correction\, and open quantum systems. \nAbstract:\nIn this talk\, I will introduce a generalization of the earth mover’s distance to the set of quantum states. The proposed distance recovers the Hamming distance for the vectors of the canonical basis\, and more generally the classical earth mover’s distance for quantum states diagonal in the canonical basis. I will discuss some desirable properties of this distance\, including a continuity bound for the von Neumann entropy and its insensitivity to local perturbations\, and I will show how these properties make the distance suitable for learning quantum data using quantum generative adversarial networks\nBased on https://arxiv.org/abs/2009.04469 and https://arxiv.org/abs/2101.03037. \n  \nThis is a Virtual Event. \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-lunch-series-event-speaker-milad-marvian/
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210326T120000
DTEND;TZID=America/New_York:20210326T130000
DTSTAMP:20260429T083952
CREATED:20210216T175807Z
LAST-MODIFIED:20210322T130359Z
UID:1076-1616760000-1616763600@quantum.ncsu.edu
SUMMARY:Quantum Lunch Series Event - Speaker Mekena Metcalf
DESCRIPTION:Talk Title: Quantum Algorithms and Reinforcement Learning for Open Quantum System Simulation \nSpeaker:  Dr. Mekena Metcalf\, is a Postdoctoral Fellow in the Computational Research Division at Lawrence Berkeley National Laboratory. \nShe received her Ph.D. from the University of California\, Merced. Dr. Metcalf was the first graduate student in Prof. Chih-Chun Chien’s theory group\, and she was in the first cohort of doctoral students in the UC Merced Physics Department. Dr. Metcalf has published numerous theory papers relating to the simulation of quantum matter. In graduate school\, she devised methods to detect topological states of ultra-cold atoms and demonstrated novel properties of non-equilibrium fermion dynamics. After receiving her doctoral degree\, Dr. Metcalf began developing quantum algorithms at Berkeley Lab. She has developed original quantum algorithms for open-quantum system dynamics and fermion simulation. Dr. Metcalf now leads a team of scientists and engineers developing artificial intelligence algorithms to enhance quantum network and computing control. She is currently the Principal Investigator on a quantum transduction project and a Quantum System Accelerator Project Lead for robust quantum control. Dr. Metcalf is the first postdoc in Computing Sciences to become a Principal Investigator on an LDRD project. She is a member of the Diversity\, Equity\, and Inclusion working group within the Quantum System Accelerator. Along with her scientific research\, Dr. Metcalf is committed to making an inclusive and diverse quantum technology ecosystem a reality. \nAbstract: \nUndesired interactions with the environment make current quantum technology noisy. Characterizing\, modeling\, and simulating these system-environment interactions is challenging due to the macroscopic nature of the environment. We designed a quantum algorithm that uses time-dependent auxiliary qubits to mimic a macroscopic environment. The algorithm prepares finite-temperature states of general Hamiltonians; we benchmarked the algorithm performance using the Transverse Field Ising Model.  Our algorithmic approach offers a path towards open-quantum system simulation using quantum computers. \nIn parallel to quantum algorithm development\, we are developing deep reinforcement learning algorithms (DRL) to optimally control quantum systems in the presence of an environment. Artificial intelligence can enhance this efficiency by bridging experimental data and theoretical models. Our DRL algorithms are designed to enhance the efficiency of optomechanical transduction. We are building a device simulator to train the DRL algorithm for a proof-of-principle demonstration. I will discuss current developments and prospects for our quantum artificial intelligence research efforts. \n  \nThis is a Virtual Event. \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-lunch-series-event-speaker-mekena-metcalf/
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210409T120000
DTEND;TZID=America/New_York:20210409T130000
DTSTAMP:20260429T083952
CREATED:20210216T180211Z
LAST-MODIFIED:20210406T194325Z
UID:1090-1617969600-1617973200@quantum.ncsu.edu
SUMMARY:Quantum Lunch Series Event - Speaker Yipeng Huang
DESCRIPTION:Talk Title: \nLogical Abstractions for Noisy Variational Quantum Algorithm Simulation. \nSpeaker: Professor Yipeng Huang\, Rutgers University \nAbstract: \nExisting quantum circuit simulators do not address the traits of variational algorithms\, namely: 1) their ability to work with noisy qubits and operations\, 2) their repeated execution of the same circuits but with different parameters\, and 3) the fact that they sample from circuit final wavefunctions to drive optimization routines. Our key insight is that knowledge compilation—a technique for efficient repeated inference originating in AI research—can be generalized to work on complex-valued quantum amplitudes\, such that the technique serves as the basis for a quantum circuit simulation toolchain geared for variational quantum algorithms.\nIn knowledge compilation\, AI models such as Bayesian networks encode probabilistic knowledge about the world in a factorized format. The Bayesian networks compile down to minimized logical formulas that enable repeated inference and sampling queries with different parameters and new pieces of evidence. The features of the knowledge compilation approach—namely\, 1) the ability to represent probabilistic information\, 2) the ability to compile probabilistic model structural information into minimized formats\, and 3) the ability to efficiently sample from the same model but for varying parameters and evidence—match the requirements for variational quantum algorithm simulation.\nOur approach offers performance advantages relative to simulation approaches based on state vectors \, density matrices \, and tensor networks. The advantages are due to the more compact representation\, the circuit minimization and memorization capabilities of our approach\, and due to the storage costs for conventional simulators based on matrix representations. The improved simulation performance facilitates studying variational algorithms in the NISQ era of quantum computing.\n\nThis is a Virtual Event. \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-lunch-series-event-speaker-yipeng-huang/
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210423T120000
DTEND;TZID=America/New_York:20210423T130000
DTSTAMP:20260429T083952
CREATED:20210406T212752Z
LAST-MODIFIED:20210406T212752Z
UID:1144-1619179200-1619182800@quantum.ncsu.edu
SUMMARY:Quantum Lunch Series Event - Speaker Travis Cuvelier
DESCRIPTION:Talk Title: Quantum Coding for Classical Communication \nSpeaker: Travis C. Cuvelier\, University Texas at Austin \nAbstract: Notable features of quantum error correction include the decomposition of continuous communication impairments into discrete channels and the ability of quantum error correcting codes (and their recovery operations) to protect against wide varieties of noise given such a discrete description.  Motivated by these insights\, we study how techniques from quantum error correction may be applied to classical communication. We propose a general framework for analyzing a ubiquitous classical channel as a quantum coding problem. An extension of the quantum error correction conditions to this classical setting leads to some insights into general quantum coding. We also apply quantum stabilizer codes to the classical problem of noncoherent multiantenna communication: we use the stabilizer formalism to develop classical space-time block codes with competitive performance. \nThis is a Virtual Event. \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/quantum-lunch-series-event-speaker-travis-cuvelier/
LOCATION:Virtual
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210903T120000
DTEND;TZID=America/New_York:20210903T130000
DTSTAMP:20260429T083952
CREATED:20210804T150208Z
LAST-MODIFIED:20210831T174637Z
UID:1173-1630670400-1630674000@quantum.ncsu.edu
SUMMARY:Duke and NC State Collaborative Quantum Computing Seminars
DESCRIPTION:Duke & NC State  will host a Collaborative Quantum Computing Seminar Sept 3\, 2021! \nTalk Title: Quantum computing with rotation-symmetric bosonic codes \nSpeaker: Josh Combes\, University of Colorado\, Boulder \nAbstract: Bosonic mode error-correcting codes are error-correcting codes where a qubit (or qudit) is encoded into one or multiple bosonic modes\, i.e.\, quantum oscillators with an infinite Hilbert space. In the first part of this talk I will give an introduction to codes that have a phase space translation symmetry\, i.e. the Gottesman-Kitaev-Preskill aka GKP\, and codes that have a rotation symmetry. Moreover\, I will survey the impressive experimental progress on these codes. The second part of the talk I focus on single-mode codes that obey rotation symmetry in phase space\, such as the well-known Cat and Binomial codes. I will introduce a universal scheme for this class of codes based only on simple and experimentally well-motivated interactions. The scheme is fault-tolerant in the sense that small errors are guaranteed to remain small under the considered gates. I will also introduce a fault-tolerant error correction scheme based on cross-Kerr interactions and imperfect destructive phase measurement (e.g.\, a marginal of heterodyne). Remarkably\, the error correction scheme approaches the optimal recovery map for Cat and Binomial codes when the auxiliary modes are error-free. We numerically compute break-even thresholds under loss and dephasing\, with ideal auxiliary systems.  If time permits I will discuss the search for optimized codes and progress towards genuine fault tolerance. \nThis is a Hybrid Collaborative Event with NC State and Duke. In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/announcing-duke-nc-state-collaborative-quantum-computing-seminars/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210910T120000
DTEND;TZID=America/New_York:20210910T130000
DTSTAMP:20260429T083952
CREATED:20210804T191151Z
LAST-MODIFIED:20210831T174808Z
UID:1184-1631275200-1631278800@quantum.ncsu.edu
SUMMARY:NC State and Duke Quantum Computing Seminar
DESCRIPTION:NC State & Duke will host a Collaborative Quantum Computing Seminar Sept 10\, 2021! \nTalk Title:  Gate-free state preparation for fast VQE molecular simulations \nSpeaker:  Oinam Romesh Meitei\, Postdoctoral Associate\, Massachusetts Institute of Technology \nAbstract:  The variational quantum eigensolver (VQE) is currently the flagship algorithm for molecular simulations on near-term quantum computers. The algorithm involves implementing a sequence of parameterized gates on quantum hardware to generate a target quantum state and measuring the molecular energy. The number of gates that can be implemented on current quantum devices remains limited mainly due to finite coherence times and frequent gate errors\, preventing accurate applications to systems with significant entanglement\, such as strongly correlated molecules. In this work\, we present an alternate approach (which we refer to as ctrl-VQE) where the quantum circuit used for state preparation is removed entirely and replaced by a quantum optimal control routine which variationally shapes a pulse to drive the initial Hartree-Fock state to the full CI target state. The objective function optimized is the ground state molecular energy. By removing the quantum circuit\, the coherence times required for state preparation can be drastically reduced by directly optimizing the pulses at the device level. We demonstrate the potential of this method numerically by directly optimizing pulse shapes which accurately model the dissociation curves of H2 and HeH+\, and the ground state energy for LiH. We further present an adaptive pulse shaping algorithm to avoid over-parameterization of pulse parameters. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu \n  \n  \n  \n 
URL:https://quantum.ncsu.edu/ibm-quantum/event/nc-state-and-duke-quantum-computing-seminar/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210917T120000
DTEND;TZID=America/New_York:20210917T130000
DTSTAMP:20260429T083952
CREATED:20210804T191118Z
LAST-MODIFIED:20210913T173541Z
UID:1187-1631880000-1631883600@quantum.ncsu.edu
SUMMARY:Duke and NC State Quantum Computing Seminar
DESCRIPTION:NC State & Duke will host a Collaborative Quantum Computing Seminar Sept 10\, 2021! \nTalk Title: Circuit QED: From Materials to Mathematics \nSpeaker: Andrew Houck\, Department of Electrical and Computer Engineering\, Princeton University \nAbstract: Superconducting circuits provide a useful toolbox for science at the intersection of many different fields – materials\, devices\, physics\, computer science\, and mathematics.  I will describe how our work with this platform spans these fields\, drawing insight from many sources to advance the state of the art.  In particular\, I will show how materials science can lead to insight into improved qubit coherence; how Hamiltonian engineering can be used to immunize qubits against noise and provide faster gates; and how lattices of qubits and cavities can draw on graph theory to realize flat bands and novel fragile topological states. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/duke-and-nc-state-quantum-computing-seminar/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20210924T120000
DTEND;TZID=America/New_York:20210924T130000
DTSTAMP:20260429T083952
CREATED:20210804T193304Z
LAST-MODIFIED:20210921T210747Z
UID:1191-1632484800-1632488400@quantum.ncsu.edu
SUMMARY:NC State and Duke Quantum Computing Seminars
DESCRIPTION:NC State & Duke will host a Collaborative Quantum Computing Seminar Sept 10\, 2021! \nTalk Title:  Software and the honeycomb code \nSpeaker: Craig Gidney\, Google AI Quantum \nAbstract: \nRecently\, Hastings & Haah published a preprint  (arXiv:2107.02194) describing a quantum code where the logical observables must dance around. The counter-intuitive nature of the code’s observables\, and historical precedent\, would suggest that estimating the circuit-noise threshold of such a code would take months of work. Instead\, using the open source tools Stim and PyMatching\, initial prototype estimates were done over a weekend. This talk will discuss how these tools were used\, where they struggled\, and why they were able to cope with an unforeseen quantum code. The talk will also discuss the bottlenecks that made turning the weekend prototype into a fully-fledged paper take an additional month.\n\n \n\nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/nc-state-and-duke-quantum-computing-seminars/
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20211001
DTEND;VALUE=DATE:20211002
DTSTAMP:20260429T083952
CREATED:20210804T193511Z
LAST-MODIFIED:20210928T152920Z
UID:1194-1633046400-1633132799@quantum.ncsu.edu
SUMMARY:FALL BREAK - No Speaker This Week for Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nFall Break  – No Speaker  – Oct. 1\, 2021 \nHave a Happy\, Safe and Howling Good Fall Break! \nWe will have a speaker for Oct. 8. at noon. \nPlease Join us then. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/duke-and-nc-state-quantum-computing-seminar-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211008T120000
DTEND;TZID=America/New_York:20211008T130000
DTSTAMP:20260429T083952
CREATED:20210804T194016Z
LAST-MODIFIED:20211006T153935Z
UID:1196-1633694400-1633698000@quantum.ncsu.edu
SUMMARY:RESCHEDULED- NC State and Duke Quantum Computing Seminar
DESCRIPTION:THIS EVENT HAS BEEN RESCHEDULED TO \nOCTOBER 29\, 2021  – If you have Registered to attend  you will receive follow up information directly.  \nThis Seminar will be held October 8\, 2021 from 12 Noon – 1pm \nTalk Title: Topological quantum compiling — an introduction \nSpeaker: Layla Hormozi \nAbstract: Topological quantum computers are hypothetical devices in which quantum information is stored in certain topologically-ordered states of matter and quantum computation is carried out by “braiding” the world-lines of quasiparticle excitations that obey non-Abelian statistics in specific patterns. Since the storage and manipulation of quantum information depends only on the topological (global) properties of the system\, this method of quantum computing is (in principle) intrinsically fault-tolerant. I will review the basic properties of topological states and describe a general method for finding braiding patterns that correspond to a universal set of quantum gates on encoded topological qubits\, based on quasiparticles that can be realized as excitations of certain fractional quantum Hall states. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/nc-state-and-duke-quantum-computing-seminar-2/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211015T120000
DTEND;TZID=America/New_York:20211015T130000
DTSTAMP:20260429T083952
CREATED:20210804T194345Z
LAST-MODIFIED:20211013T173722Z
UID:1198-1634299200-1634302800@quantum.ncsu.edu
SUMMARY:Duke and NC State Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nSeminars will be held each Friday this fall from 12 Noon – 1pm \nTalk Title:  Optimizing Tensor Network Ansatzes \nSpeaker:   Daniel Stilck França \nAbstract:  Tensor network states form a variational ansatz class widely used\, both analytically and numerically\, in the study of quantum many-body systems. It is known that if the underlying graph contains a cycle\, e.g.\, as in projected entangled pair states\, then the set of tensor network states of given bond dimension is not closed. Its closure is the tensor network variety. Recent work has shown that states on the boundary of this variety can yield more efficient representations for states of physical interest\, but it remained unclear how to systematically find and optimize over such representations. We address this issue by defining an ansatz class of states that includes states at the boundary of the tensor network variety of given bond dimension. We show how to optimize over this class in order to find ground states of local Hamiltonians by only slightly modifying standard algorithms and code for tensor networks. We apply this method to different models and observe favorable energies and runtimes when compared with standard tensor network methods. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/duke-and-nc-state-quantum-computing-seminar-3/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211022T120000
DTEND;TZID=America/New_York:20211022T130000
DTSTAMP:20260429T083952
CREATED:20210804T201004Z
LAST-MODIFIED:20211108T143612Z
UID:1200-1634904000-1634907600@quantum.ncsu.edu
SUMMARY:NC State and Duke Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nSeminars will be held each Friday this fall from 12 Noon – 1pm \nTalk Title: Exploring Airline Gate-Scheduling Optimization Using Quantum Computers \nSpeaker: Hamed Mohammadbagerpoor \nAbstract:  Finding an optimal solution for scheduling\, planning\, and resource allocation problems with hard constraints has often been formulated as a combinatorial optimization with binary decision variables\, including application of graph coloring methods. However\, optimizing such cost functions using classical computers can become intractable as the number of nodes and edges of the graph increase. To mitigate this difficulty\, many researchers have been exploring various hybrid classical-quantum approaches. In this talk\, we will explore the state-of-the-art general quantum computing solutions for the QUBO optimization. In particular\, we will focus on a space-efficient embedding algorithm which can exponentially reduce the number of required qubits to find such graph coloring solutions. We will compare these results from our implementation for both general and space-efficient embedding and discuss how this approach can be applied to the challenges of airline gate-scheduling. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/nc-state-and-duke-quantum-computing-seminar-3/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211029T120000
DTEND;TZID=America/New_York:20211029T130000
DTSTAMP:20260429T083952
CREATED:20210804T204628Z
LAST-MODIFIED:20211108T142436Z
UID:1202-1635508800-1635512400@quantum.ncsu.edu
SUMMARY:Duke and NC State Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nSeminars will be held each Friday this fall from 12 Noon – 1pm \nTalk Title: Topological quantum compiling — an introduction \nSpeaker:  Layla Hormozi \nAbstract: Topological quantum computers are hypothetical devices in which quantum information is stored in certain topologically-ordered states of matter and quantum computation is carried out by “braiding” the world-lines of quasiparticle excitations that obey non-Abelian statistics in specific patterns. Since the storage and manipulation of quantum information depends only on the topological (global) properties of the system\, this method of quantum computing is (in principle) intrinsically fault-tolerant. I will review the basic properties of topological states and describe a general method for finding braiding patterns that correspond to a universal set of quantum gates on encoded topological qubits\, based on quasiparticles that can be realized as excitations of certain fractional quantum Hall states. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/duke-and-nc-state-quantum-computing-seminar-4/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211105T120000
DTEND;TZID=America/New_York:20211105T130000
DTSTAMP:20260429T083952
CREATED:20210804T210720Z
LAST-MODIFIED:20211108T144857Z
UID:1204-1636113600-1636117200@quantum.ncsu.edu
SUMMARY:NC State and Duke Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nSeminars will be held each Friday this fall from 12 Noon – 1pm \nTalk Title:Lessons from Quantum Annealing for the NISQ Era \nSpeaker:  Tameem Albash \nAbstract: As a general-purpose quantum optimization algorithm\, quantum annealing was billed as a promising approach for early demonstrations of the broad utility of quantum computing. When the first commercial quantum annealing devices became available in 2011\, there was palpable excitement that we were on the verge of demonstrating the first quantum advantage over classical computing. This has not materialized yet; instead the physical realization of the algorithm in quantum annealers has revealed many obstacles.  I will discuss how decoherence in various forms impedes a determination of the potential of the algorithm\, and how strict benchmarking standards and improving classical algorithms have set a high bar for the demonstration of a quantum advantage. Our experience with quantum annealers will hopefully be valuable in evaluating future quantum information processors in the Noisy-Intermediate Scale Quantum era. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/nc-state-and-duke-quantum-computing-seminar-4/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211112T120000
DTEND;TZID=America/New_York:20211112T130000
DTSTAMP:20260429T083952
CREATED:20210804T210856Z
LAST-MODIFIED:20211108T142110Z
UID:1206-1636718400-1636722000@quantum.ncsu.edu
SUMMARY:Duke and NC State Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nSeminars will be held each Friday this fall from 12 Noon – 1pm \nTalk Title:  Implementing high-fidelity gates in ion traps \nSpeaker:  Kenton Brown and Holly Tinkey \nAbstract: Trapped-ion quantum technologies continue to develop into more sophisticated devices. Several experiments now trap tens of ions to perform small-scale algorithms in cutting-edge\, small-scale quantum computing testbeds. Here we present results demonstrating two tools not yet widely incorporated into the latest experiments. The first of these is the creation of a Bell-state with the highest fidelity yet measured [fidelity 0.9994(3)]. To achieve this result\, we employ a light-shift-based entangling scheme acting on a pair of 40Ca+ ions in a cryogenic surface-electrode ion trap. This experiment leverages qubit levels separated by an optical transition frequency as well as the high optical power that is available from a commercial 532 nm Nd:YAG laser. In another experiment\, we perform a two-qubit entangling Mølmer-Sørensen gate by transporting two 40Ca+ ions in a linear surface Paul trap through a stationary\, bichromatic laser beam. We measure variations in the Doppler shift of the ions during this transport and correct for these variations using modifications to the time dependence of the moving trap potential. This correction is enabled by the use of arbitrary waveform generators with high (20 MSPS) sampling rates for trap-electrode control. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/duke-and-nc-state-quantum-computing-seminar-5/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20211119T120000
DTEND;TZID=America/New_York:20211119T130000
DTSTAMP:20260429T083952
CREATED:20210804T211100Z
LAST-MODIFIED:20211115T132212Z
UID:1208-1637323200-1637326800@quantum.ncsu.edu
SUMMARY:NC State and Duke Quantum Computing Seminar
DESCRIPTION:Duke & NC State will host a series of Collaborative Quantum Computing Seminars for 2021 – 2022 Academic year! \nSeminars will be held each Friday this fall from 12 Noon – 1pm \nTalk Title:  Optically Trapped Atomic Qubits \nSpeaker: Jonathan King\, Chief Scientist\, Atom Computing \nAbstract:  Ultracold neutral atoms have emerged as a leading platform for scalable quantum simulation\, but can they be similarly used for gate-based quantum computation? In this talk\, I will present an overview of major accomplishments in academia that have spurred multiple different startups to enter the quantum computing race\, focusing on the use of neutral atoms as a scalable qubit platform. With these proof of principle demonstrations in mind\, I will describe Atom Computing’s first prototype system which\, very recently\, announced the use of a unique qubit to achieve T2* times in excess of 20 seconds. Utilizing qubit states that are broadly insensitive to the environment they are trapped in\, this system is quickly becoming a testbed for how to build programmatic control into neutral atom systems that rivals other leading quantum computing platforms. \nThis is a Hybrid Collaborative Event with NC State and Duke. The In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/nc-state-and-duke-quantum-computing-seminar-5/
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20211228
DTEND;VALUE=DATE:20211229
DTSTAMP:20260429T083952
CREATED:20211115T145920Z
LAST-MODIFIED:20211221T210008Z
UID:1330-1640649600-1640735999@quantum.ncsu.edu
SUMMARY:Collaborative Computing Seminars Return at New Time For Spring 2022
DESCRIPTION:Collaborative Quantum Computing Seminars Will RETURN for Spring Semester 2022!\nAT NEW  TIME  – 2pm on Fridays Starting on or about January 14th! \nMore information about the Quantum Computing Seminar’s Spring speakers\, locations and topics Coming Soon! \nThis is a Hybrid Event with NC State. In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link Updated in January. \nFor more information email: \nquantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/collaborative-computing-seminars-return-at-new-time-for-spring-2022/2021-12-28/
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20220114
DTEND;VALUE=DATE:20220115
DTSTAMP:20260429T083952
CREATED:20211115T154415Z
LAST-MODIFIED:20220114T132907Z
UID:1352-1642118400-1642204799@quantum.ncsu.edu
SUMMARY:Collaborative Quantum Computing Seminar Series Returns Jan. 21\,  for Spring 2022!
DESCRIPTION:Collaborative Quantum Computing Seminar Series Returns Jan. 21 Spring 2022\nNEW TIME: Seminars will be held each Friday for Spring 2022 from 2pm – 3pm \nEach week Duke\, NC State and UNC will alternate hosting a Speaker to highlight areas of interest in the world of Quantum. \nPlease check back often as speaker information will be updated as it is available. \nEach week we will post the Talk Title\, Speaker’s Name and Affiliation and the Abstract for their talk.  \n  \nThis is a Hybrid Event for NC State.  \nIn Person location for NC State staff\, faculty and students is Venture Place\, 2nd Floor\, Large Classroom. \nDuke Quantum will be virtual only for Spring Semester. \nUNC Chapel Hill is TBD. \n  \nREGISTRATION: Form Link \nFor more information email:   quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/duke-nc-states-collaborative-quantum-computing-seminar-series-continues-for-spring-2022/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220114T140000
DTEND;TZID=America/New_York:20220114T150000
DTSTAMP:20260429T083952
CREATED:20220114T134035Z
LAST-MODIFIED:20220114T134035Z
UID:1395-1642168800-1642172400@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series 2022 - New Title /New Time Still Quantum!
DESCRIPTION:Collaborative Quantum Computing Seminar Series – Now Called\nTriangle Quantum Computing Seminar Series Returns Jan. 21 Spring 2022\nAt a NEW TIME: Seminars will be held each Friday for Spring 2022 from 2pm – 3pm. \nWe have a New Partner this semester\, UNC at Chapel Hill’s Kenan Institute and rethinc Labs will join Duke Quantum Center and the \nIBM Quantum Hub at NC State to alternate hosting speakers each week in areas of interest in the world of Quantum. \nPlease check back often as speaker information will be updated as it is available. \nEach week we will post the Talk Title\, Speaker’s Name and Affiliation and the Abstract for their talk.  \n  \nThis is a Hybrid Event for NC State.  \nIn Person location for NC State staff\, faculty and students is Venture Place\, 2nd Floor\, Large Classroom. \nDuke Quantum will be virtual only for Spring Semester. \nUNC Chapel Hill is TBD.
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-2022-new-title-new-time-still-quantum/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220121T140000
DTEND;TZID=America/New_York:20220121T150000
DTSTAMP:20260429T083952
CREATED:20220118T150422Z
LAST-MODIFIED:20220118T150422Z
UID:1146-1642773600-1642777200@quantum.ncsu.edu
SUMMARY:First Triangle Quantum Computing Seminar Series for Spring 2022
DESCRIPTION:Join Today’s Duke\, NC State and UNC’s Collaborative Quantum Computing Seminar \nNEW TIME: Seminars will be held each Friday this Spring from 2pm – 3pm\nTalk Title: Interactive Protocols for Classically-Verifiable Quantum Advantage with an Ion-Trap\nQuantum Computer \nSpeaker:   Daiwei Zhu \nAbstract: \nThe recent demonstrations of quantum advantage with superconducting and linear optics devices have highlighted both the impressive capabilities of near-term quantum computers but also the limitations in being able to verify the results in a scalable manner. This is because current experiments have focused on (classically-hard) sampling tasks which\, while relatively easy to implement in hardware\, require exponential time to validate their results. A way to overcome the intractability of verification is with interactive proofs of quantumness—protocols that leverage cryptographic functions as well as interactions between a prover and a verifier\, to bridge the gap between verifiability and implementation. \nIn this talk\, we present the first implementation of such an interactive test of quantum advantage on an ion-trap quantum computer. This consists of two complementary protocols—one based on the hardness of factoring\, which implements a type of computational Bell test and another based on the learning with errors (LWE) problem. To perform multiple rounds of interaction\, we used a split-and-shuttle approach to realize mid-circuit measurements on selected subsystems\, with subsequent coherent evolution. For both protocols\, the experimental results exceed the asymptotic bound for classical behavior; maintaining this fidelity at scale would conclusively demonstrate verifiable quantum advantage. \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/first-triangle-quantum-computing-seminar-series-for-spring-2022/
ORGANIZER;CN="IBM Quantum Hub at NC State":MAILTO:quantumcomputing@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220128T140000
DTEND;TZID=America/New_York:20220128T150000
DTSTAMP:20260429T083952
CREATED:20220125T155825Z
LAST-MODIFIED:20220125T155825Z
UID:1421-1643378400-1643382000@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series Jan. 28
DESCRIPTION:Join Today’s Duke\, NC State and UNC’s collaborative Triangle Quantum Computing Seminar \nTalk Title:Towards Quantum Advantage in Financial Market Risk using Quantum Gradient Algorithms \nSpeaker:  Nikitas Stamatopoulos\, Vice President in the R&D Engineering Division at Goldman Sachs \nHosted by: UNC Kenan-Flagler’s Rethinc. Labs \nAbstract: \nPrevious work has shown that quantum amplitude estimation can accelerate derivative pricing quadratically in the target error and with his team Stamatopoulos extends this to a quadratic error scaling advantage in market risk computation. They show that employing quantum gradient estimation algorithms can deliver a further quadratic advantage in the number of the associated market sensitivities\, usually called greeks. By numerically simulating the quantum gradient estimation algorithms on financial derivatives of practical interest\, they demonstrate that not only can we successfully estimate the greeks in the examples studied\, but that the resource requirements can be significantly lower in practice than what is expected by theoretical complexity bounds. This additional advantage in the computation of financial market risk lowers the estimated logical clock rate required for financial quantum advantage from Chakrabarti et al. [Quantum 5\, 463 (2021)] by a factor of 50\, from 50MHz to 1MHz\, even for a modest number of greeks by industry standards (four). Moreover\, they show that if we have access to enough resources\, the quantum algorithm can be parallelized across 30 QPUs for the same overall runtime as the serial execution if the logical clock rate of each device is ~30kHz\, same order of magnitude as the best current estimates of feasible target clock rates of around 10kHz. Throughout this work\, they summarize and compare several different combinations of quantum and classical approaches that could be used for computing the market risk of financial derivatives. \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-jan-28/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220204T140000
DTEND;TZID=America/New_York:20220204T150000
DTSTAMP:20260429T083952
CREATED:20220125T160017Z
LAST-MODIFIED:20220201T123820Z
UID:1424-1643983200-1643986800@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC’s collaborative Triangle Quantum Computing Seminar \nNo Speaker This week  \nFeb. 4\,  2022 \nPlease Check Calendar posting for Feb. 11\, 2022 for Speaker information.  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220211T140000
DTEND;TZID=America/New_York:20220211T150000
DTSTAMP:20260429T083952
CREATED:20220125T160137Z
LAST-MODIFIED:20220418T164217Z
UID:1426-1644588000-1644591600@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC’s collaborative Triangle Quantum Computing Seminar \nTalk Title: Faster and More Reliable Quantum SWAPs via Native Gates \nSpeaker:  Pranav Gokhale\, Co-founder and CEO of Super.tech \nHosted by:  Duke Quantum Center \nAbstract:  Due to the sparse connectivity of superconducting quantum computers\, qubit communication via SWAP gates accounts for the vast majority of overhead in quantum programs. We introduce a method for improving the speed and reliability of SWAPs at the level of the superconducting hardware’s native gateset. Our method relies on four techniques: 1) SWAP Orientation\, 2) Cross-Gate Pulse Cancellation\, 3) Commutation through Cross-Resonance\, and 4) Cross-Resonance Polarity. Importantly\, our Optimized SWAP is bootstrapped from the pre-calibrated gates\, and therefore incurs zero calibration overhead. We experimentally evaluate our optimizations with Qiskit Pulse on IBM hardware. Our Optimized SWAP is 11% faster and 13% more reliable than the Standard SWAP. We also experimentally validate our optimizations on application-level benchmarks. Due to (a) the multiplicatively compounding gains from improved SWAPs and (b) the frequency of SWAPs\, we observe typical improvements in success probability of 10-40%. The Optimized SWAP is available through the SuperstaQ platform. \n  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-2/
CATEGORIES:Triangle Quantum Computing Seminar Series
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20220218T140000
DTEND;TZID=America/New_York:20220218T150000
DTSTAMP:20260429T083952
CREATED:20220201T124436Z
LAST-MODIFIED:20220418T164248Z
UID:1428-1645192800-1645196400@quantum.ncsu.edu
SUMMARY:Triangle Quantum Computing Seminar Series
DESCRIPTION:Join Today’s Duke\, NC State and UNC collaborative Triangle Quantum Computing Seminar \nTalk Title:  Quantum field theories from quantum cellular automata \nSpeaker: Todd Brun\, USC Viterbi School of Engineering \nHosted by:  Duke Quantum Center \nAbstract:  Work done in collaboration with Leonard Mlodin \nQuantum walks (QWs) are unitary analogues of classical random walks\, and quantum cellular automata (QCAs) are unitary analogues of classical cellular automata. The QW on the 3D body-centered cubic lattice gives rise to solutions of the Dirac equation in the long-wavelength limit\, both in 1D and 3D; in 1D\, a two-dimensional internal space is required\, and in 3D a four-dimensional internal space. QWs can be treated as the one-particle sector of a QCA\, so it is natural to seek QCAs that give rise to quantum field theories in a similar limit.  This can be done fairly straightforwardly in one spatial dimension\, with the QCA being naturally described in terms of creation and annihilation operators that create or destroy particle locally\, evolve simply under the QCA unitary\, and obey the usual anticommutation relations.  However\, generalizing this construction to two or more spatial dimensions fails:  the requirements of anticommuting creation and annihilation operators are inconsistent with a local QCA.  For a QCA to give rise to a fermionic quantum field theory in the long-wavelength limit\, one must give up at least one desired property of the QCA. To evade this no-go theorem\, one can let the local subsystems become high-dimensional\, and restrict to the completely antisymmetric subspace of a larger space. Bosonic QCAs can also be constructed; these do not have the same problem with anticommutation\, but also require high-dimensional local subsystems. Taking these constructions as a model of particles propagating in discrete spacetime\, the discreteness could be detected using non-parallel matter interferometers. Finally\, we consider the problem of adding fermion-boson interactions\, and progress towards constructing a fully interacting QCA model\, and the potential for using QCAs to simulate quantum field theory. \n  \nThis is a Hybrid Event with NC State. \nThe In Person location for NC State is Venture Place\, 2nd Floor\, Large Classroom. \nREGISTRATION: Form Link  \nFor more information email:  quantumcomputing@ncsu.edu
URL:https://quantum.ncsu.edu/ibm-quantum/event/triangle-quantum-computing-seminar-series-3/
CATEGORIES:Triangle Quantum Computing Seminar Series
END:VEVENT
END:VCALENDAR